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fix: deadlock of vnode if its state changed

This commit is contained in:
Shengliang Guan 2022-08-12 16:32:11 +08:00
parent 1d9331e257
commit 4f90578270
3 changed files with 23 additions and 7 deletions
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3
source/dnode/vnode/src/inc/vnodeInt.h
View File

@ -308,7 +308,8 @@ struct SVnode {
SSink* pSink;
tsem_t canCommit;
int64_t sync;
int32_t blockCount;
SRWLatch lock;
bool blocked;
bool restored;
tsem_t syncSem;
SQHandle* pQuery;

3
source/dnode/vnode/src/vnd/vnodeOpen.c
View File

@ -85,7 +85,8 @@ SVnode *vnodeOpen(const char *path, STfs *pTfs, SMsgCb msgCb) {
pVnode->state.commitTerm = info.state.commitTerm;
pVnode->pTfs = pTfs;
pVnode->msgCb = msgCb;
pVnode->blockCount = 0;
taosInitRWLatch(&pVnode->lock);
pVnode->blocked = false;
tsem_init(&pVnode->syncSem, 0, 0);
tsem_init(&(pVnode->canCommit), 0, 1);

20
source/dnode/vnode/src/vnd/vnodeSync.c
View File

@ -28,20 +28,28 @@ static inline bool vnodeIsMsgWeak(tmsg_t type) { return false; }
static inline void vnodeWaitBlockMsg(SVnode *pVnode, const SRpcMsg *pMsg) {
if (vnodeIsMsgBlock(pMsg->msgType)) {
const STraceId *trace = &pMsg->info.traceId;
taosWLockLatch(&pVnode->lock);
if (!pVnode->blocked) {
vGTrace("vgId:%d, msg:%p wait block, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
pVnode->blockCount = 1;
pVnode->blocked = true;
taosWUnLockLatch(&pVnode->lock);
tsem_wait(&pVnode->syncSem);
} else {
taosWUnLockLatch(&pVnode->lock);
}
}
}
static inline void vnodePostBlockMsg(SVnode *pVnode, const SRpcMsg *pMsg) {
if (vnodeIsMsgBlock(pMsg->msgType)) {
const STraceId *trace = &pMsg->info.traceId;
if (pVnode->blockCount) {
taosWLockLatch(&pVnode->lock);
if (pVnode->blocked) {
vGTrace("vgId:%d, msg:%p post block, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
pVnode->blockCount = 0;
pVnode->blocked = false;
tsem_post(&pVnode->syncSem);
}
taosWUnLockLatch(&pVnode->lock);
}
}
@ -677,6 +685,12 @@ static void vnodeBecomeFollower(struct SSyncFSM *pFsm) {
vDebug("vgId:%d, become follower", pVnode->config.vgId);
// clear old leader resource
taosWLockLatch(&pVnode->lock);
if (pVnode->blocked) {
pVnode->blocked = false;
tsem_post(&pVnode->syncSem);
}
taosWUnLockLatch(&pVnode->lock);
}
static void vnodeBecomeLeader(struct SSyncFSM *pFsm) {